Star Trek TNG Rocker Switch Light Switch Cover Ditch that plain light-switch cover! Put this on your light switch! Trek out your house with this light-switch cover! Trek out your house and beam your living space into the future with this colorful switch cover with graphics based on the LCARS computer! Dilithium Crystals may not power you, but you can bring the dream into your home. It's a GNDN lighting control for larger rocker-style light switches that measures about 5-inches tall x 2 3/4-inches wide. Fascinating!